Theorem difelfznle 10520

Description: The difference of two integers from a finite set of sequential nonnegative integers increased by the upper bound is also element of this finite set of sequential integers. (Contributed by Alexander van der Vekens, 12-Jun-2018.)

Assertion

Ref	Expression
difelfznle	⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → ((𝑀 + 𝑁) − 𝐾) ∈ (0...𝑁))

Proof of Theorem difelfznle

Step	Hyp	Ref	Expression
1		elfz2nn0 10497	. . . . . 6 ⊢ (𝑀 ∈ (0...𝑁) ↔ (𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝑀 ≤ 𝑁))
2		nn0addcl 9577	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑀 + 𝑁) ∈ ℕ0)
3	2	nn0zd 9745	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑀 + 𝑁) ∈ ℤ)
4	3	3adant3 1048	. . . . . 6 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝑀 ≤ 𝑁) → (𝑀 + 𝑁) ∈ ℤ)
5	1, 4	sylbi 121	. . . . 5 ⊢ (𝑀 ∈ (0...𝑁) → (𝑀 + 𝑁) ∈ ℤ)
6		elfzelz 10407	. . . . 5 ⊢ (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℤ)
7		zsubcl 9664	. . . . 5 ⊢ (((𝑀 + 𝑁) ∈ ℤ ∧ 𝐾 ∈ ℤ) → ((𝑀 + 𝑁) − 𝐾) ∈ ℤ)
8	5, 6, 7	syl2anr 290	. . . 4 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → ((𝑀 + 𝑁) − 𝐾) ∈ ℤ)
9	8	3adant3 1048	. . 3 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → ((𝑀 + 𝑁) − 𝐾) ∈ ℤ)
10	6	zred 9747	. . . . . . 7 ⊢ (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℝ)
11	10	adantr 276	. . . . . 6 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → 𝐾 ∈ ℝ)
12		elfzel2 10405	. . . . . . . 8 ⊢ (𝐾 ∈ (0...𝑁) → 𝑁 ∈ ℤ)
13	12	zred 9747	. . . . . . 7 ⊢ (𝐾 ∈ (0...𝑁) → 𝑁 ∈ ℝ)
14	13	adantr 276	. . . . . 6 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → 𝑁 ∈ ℝ)
15		nn0readdcl 9605	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑀 + 𝑁) ∈ ℝ)
16	15	3adant3 1048	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝑀 ≤ 𝑁) → (𝑀 + 𝑁) ∈ ℝ)
17	1, 16	sylbi 121	. . . . . . 7 ⊢ (𝑀 ∈ (0...𝑁) → (𝑀 + 𝑁) ∈ ℝ)
18	17	adantl 277	. . . . . 6 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → (𝑀 + 𝑁) ∈ ℝ)
19		elfzle2 10411	. . . . . . 7 ⊢ (𝐾 ∈ (0...𝑁) → 𝐾 ≤ 𝑁)
20		elfzle1 10410	. . . . . . . 8 ⊢ (𝑀 ∈ (0...𝑁) → 0 ≤ 𝑀)
21		nn0re 9551	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℕ0 → 𝑀 ∈ ℝ)
22		nn0re 9551	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ)
23	21, 22	anim12ci 339	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
24	23	3adant3 1048	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝑀 ≤ 𝑁) → (𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
25	1, 24	sylbi 121	. . . . . . . . 9 ⊢ (𝑀 ∈ (0...𝑁) → (𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
26		addge02 8791	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ) → (0 ≤ 𝑀 ↔ 𝑁 ≤ (𝑀 + 𝑁)))
27	25, 26	syl 14	. . . . . . . 8 ⊢ (𝑀 ∈ (0...𝑁) → (0 ≤ 𝑀 ↔ 𝑁 ≤ (𝑀 + 𝑁)))
28	20, 27	mpbid 147	. . . . . . 7 ⊢ (𝑀 ∈ (0...𝑁) → 𝑁 ≤ (𝑀 + 𝑁))
29	19, 28	anim12i 338	. . . . . 6 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → (𝐾 ≤ 𝑁 ∧ 𝑁 ≤ (𝑀 + 𝑁)))
30		letr 8398	. . . . . . 7 ⊢ ((𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ (𝑀 + 𝑁) ∈ ℝ) → ((𝐾 ≤ 𝑁 ∧ 𝑁 ≤ (𝑀 + 𝑁)) → 𝐾 ≤ (𝑀 + 𝑁)))
31	30	imp 124	. . . . . 6 ⊢ (((𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ (𝑀 + 𝑁) ∈ ℝ) ∧ (𝐾 ≤ 𝑁 ∧ 𝑁 ≤ (𝑀 + 𝑁))) → 𝐾 ≤ (𝑀 + 𝑁))
32	11, 14, 18, 29, 31	syl31anc 1281	. . . . 5 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → 𝐾 ≤ (𝑀 + 𝑁))
33	32	3adant3 1048	. . . 4 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → 𝐾 ≤ (𝑀 + 𝑁))
34		zre 9627	. . . . . . . 8 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℝ)
35	21, 22	anim12i 338	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ))
36	35	3adant3 1048	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝑀 ≤ 𝑁) → (𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ))
37	1, 36	sylbi 121	. . . . . . . . 9 ⊢ (𝑀 ∈ (0...𝑁) → (𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ))
38		readdcl 8295	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝑀 + 𝑁) ∈ ℝ)
39	37, 38	syl 14	. . . . . . . 8 ⊢ (𝑀 ∈ (0...𝑁) → (𝑀 + 𝑁) ∈ ℝ)
40	34, 39	anim12ci 339	. . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ (0...𝑁)) → ((𝑀 + 𝑁) ∈ ℝ ∧ 𝐾 ∈ ℝ))
41	6, 40	sylan 283	. . . . . 6 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → ((𝑀 + 𝑁) ∈ ℝ ∧ 𝐾 ∈ ℝ))
42	41	3adant3 1048	. . . . 5 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → ((𝑀 + 𝑁) ∈ ℝ ∧ 𝐾 ∈ ℝ))
43		subge0 8793	. . . . 5 ⊢ (((𝑀 + 𝑁) ∈ ℝ ∧ 𝐾 ∈ ℝ) → (0 ≤ ((𝑀 + 𝑁) − 𝐾) ↔ 𝐾 ≤ (𝑀 + 𝑁)))
44	42, 43	syl 14	. . . 4 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → (0 ≤ ((𝑀 + 𝑁) − 𝐾) ↔ 𝐾 ≤ (𝑀 + 𝑁)))
45	33, 44	mpbird 167	. . 3 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → 0 ≤ ((𝑀 + 𝑁) − 𝐾))
46		elnn0z 9636	. . 3 ⊢ (((𝑀 + 𝑁) − 𝐾) ∈ ℕ0 ↔ (((𝑀 + 𝑁) − 𝐾) ∈ ℤ ∧ 0 ≤ ((𝑀 + 𝑁) − 𝐾)))
47	9, 45, 46	sylanbrc 421	. 2 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → ((𝑀 + 𝑁) − 𝐾) ∈ ℕ0)
48		elfz3nn0 10500	. . 3 ⊢ (𝐾 ∈ (0...𝑁) → 𝑁 ∈ ℕ0)
49	48	3ad2ant1 1049	. 2 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → 𝑁 ∈ ℕ0)
50		elfzelz 10407	. . . . . 6 ⊢ (𝑀 ∈ (0...𝑁) → 𝑀 ∈ ℤ)
51		zltnle 9669	. . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 < 𝐾 ↔ ¬ 𝐾 ≤ 𝑀))
52	51	ancoms 268	. . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑀 < 𝐾 ↔ ¬ 𝐾 ≤ 𝑀))
53		zre 9627	. . . . . . . 8 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ)
54		ltle 8403	. . . . . . . 8 ⊢ ((𝑀 ∈ ℝ ∧ 𝐾 ∈ ℝ) → (𝑀 < 𝐾 → 𝑀 ≤ 𝐾))
55	53, 34, 54	syl2anr 290	. . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑀 < 𝐾 → 𝑀 ≤ 𝐾))
56	52, 55	sylbird 170	. . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (¬ 𝐾 ≤ 𝑀 → 𝑀 ≤ 𝐾))
57	6, 50, 56	syl2an 289	. . . . 5 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → (¬ 𝐾 ≤ 𝑀 → 𝑀 ≤ 𝐾))
58	57	3impia 1231	. . . 4 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → 𝑀 ≤ 𝐾)
59	50	zred 9747	. . . . . . 7 ⊢ (𝑀 ∈ (0...𝑁) → 𝑀 ∈ ℝ)
60	59	adantl 277	. . . . . 6 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → 𝑀 ∈ ℝ)
61	60, 11, 14	leadd1d 8857	. . . . 5 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → (𝑀 ≤ 𝐾 ↔ (𝑀 + 𝑁) ≤ (𝐾 + 𝑁)))
62	61	3adant3 1048	. . . 4 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → (𝑀 ≤ 𝐾 ↔ (𝑀 + 𝑁) ≤ (𝐾 + 𝑁)))
63	58, 62	mpbid 147	. . 3 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → (𝑀 + 𝑁) ≤ (𝐾 + 𝑁))
64	18, 11, 14	lesubadd2d 8862	. . . 4 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁)) → (((𝑀 + 𝑁) − 𝐾) ≤ 𝑁 ↔ (𝑀 + 𝑁) ≤ (𝐾 + 𝑁)))
65	64	3adant3 1048	. . 3 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → (((𝑀 + 𝑁) − 𝐾) ≤ 𝑁 ↔ (𝑀 + 𝑁) ≤ (𝐾 + 𝑁)))
66	63, 65	mpbird 167	. 2 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → ((𝑀 + 𝑁) − 𝐾) ≤ 𝑁)
67		elfz2nn0 10497	. 2 ⊢ (((𝑀 + 𝑁) − 𝐾) ∈ (0...𝑁) ↔ (((𝑀 + 𝑁) − 𝐾) ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ ((𝑀 + 𝑁) − 𝐾) ≤ 𝑁))
68	47, 49, 66, 67	syl3anbrc 1212	1 ⊢ ((𝐾 ∈ (0...𝑁) ∧ 𝑀 ∈ (0...𝑁) ∧ ¬ 𝐾 ≤ 𝑀) → ((𝑀 + 𝑁) − 𝐾) ∈ (0...𝑁))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 104   ↔ wb 105   ∧ w3a 1009   ∈ wcel 2209   class class class wbr 4125  (class class class)co 6075  ℝcr 8168  0cc0 8169   + caddc 8172   < clt 8350   ≤ cle 8351   − cmin 8487  ℕ₀cn0 9542  ℤcz 9623  ...cfz 10390

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4244  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679  ax-cnex 8260  ax-resscn 8261  ax-1cn 8262  ax-1re 8263  ax-icn 8264  ax-addcl 8265  ax-addrcl 8266  ax-mulcl 8267  ax-addcom 8269  ax-addass 8271  ax-distr 8273  ax-i2m1 8274  ax-0lt1 8275  ax-0id 8277  ax-rnegex 8278  ax-cnre 8280  ax-pre-ltirr 8281  ax-pre-ltwlin 8282  ax-pre-lttrn 8283  ax-pre-ltadd 8285

This theorem depends on definitions:  df-bi 117  df-3or 1010  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-int 3966  df-br 4126  df-opab 4188  df-mpt 4189  df-id 4433  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-fv 5380  df-riota 6028  df-ov 6078  df-oprab 6079  df-mpo 6080  df-pnf 8352  df-mnf 8353  df-xr 8354  df-ltxr 8355  df-le 8356  df-sub 8489  df-neg 8490  df-inn 9284  df-n0 9543  df-z 9624  df-uz 9901  df-fz 10391

This theorem is referenced by: (None)